71292313 has 8 divisors (see below), whose sum is σ = 75161600. Its totient is φ = 67434768.

The previous prime is 71292257. The next prime is 71292329. The reversal of 71292313 is 31329217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71292313 - 2¹³ = 71284121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71292383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11368 + ... + 16486.

It is an arithmetic number, because the mean of its divisors is an integer number (9395200).

Almost surely, 2^71292313 is an apocalyptic number.

It is an amenable number.

71292313 is a deficient number, since it is larger than the sum of its proper divisors (3869287).

71292313 is a wasteful number, since it uses less digits than its factorization.

71292313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5871.

The product of its digits is 2268, while the sum is 28.

The square root of 71292313 is about 8443.4775418663. The cubic root of 71292313 is about 414.6492667362.

It can be divided in two parts, 712 and 92313, that added together give a square (93025 = 305²).

The spelling of 71292313 in words is "seventy-one million, two hundred ninety-two thousand, three hundred thirteen".